Chemistry Test

Result

Chemistry Test - 11

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Weekly Quiz Competition

Question 1
1 / -0

A

Option A

B

Option B

C

Option D

D

Option C
Question 2
1 / -0

A

Option D

B

Option B

C

Option C

D

All of these
Question 3
1 / -0

A

Option 1

B

Option 2

C

Option 3

D

Option 4
Question 4
1 / -0

A

7

B

6

C

8

D

9
Question 5
1 / -0

For the estimation of nitrogen, 1.4 g of organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10 sulphuric acid. The unreacted acid required 20 ml of M/10 sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is:

A

10%

B

5%

C

6%

D

3%
Question 6
1 / -0

The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is:

A

7 : 32

B

3 : 16

C

1 : 4

D

1: 8
Question 7
1 / -0

The reactivity of compound Z with different halogens under appropriate conditions is given above : The observed pattern of electrophilic substitution can be explained by

A

All of these

B

the steric effect of the halogen

C

the steric effect of the tert-butyl group

D

the electronic effect of the phenolic group
Question 8
1 / -0

A compound H2 X with molar weight of 80g is dissolved in a solvent having density of 0.4 gml^–1. Assuming no change in volume upon dissolution, the molality of a 3.2 molar solution is

A

7

B

9

C

8

D

6
Question 9
1 / -0

A

Ethylene

B

Acetaldehyde

C

Acetyl chloride

D

Acetylene
Question 10
1 / -0

9.65 C of electric current is passed through fused anhydrous magnesium chloride. The magnesium metal thus obtained is completely converted into a Grignard reagent. The number of moles of the Grignard reagent obtained is ______.

A

1 x 10^-5

B

1 x 10^-4

C

5 x 10^-5

D

5 x 10^-4